New research suggests that Earth's recent mini-moon might have originated as part of our actual moon long, long ago.
An asteroid that orbited near Earth for a few months as a mini-moon may be a chunk of the moon that was blasted off by an impact thousands of years ago.
A small space rock that lingered near Earth last year and was referred to as its temporary “mini-moon” may actually ... The discovery sheds light on a rare but growing population of lunar ...